The rotation in the rectangle function in matlab cannot be used, but the 2022 version can be used.

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道夫 2024-9-20

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/2154310-the-rotation-in-the-rectangle-function-in-matlab-cannot-be-used-but-the-2022-version-can-be-used

评论：道夫 2024-9-23

采纳的回答： Steven Lord

rectangle('Position',[1 2 5 6],'Rotation',45);

axis([0 10 0 10]);

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Answer 1

Steven Lord 2024-9-20

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链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/2154310-the-rotation-in-the-rectangle-function-in-matlab-cannot-be-used-but-the-2022-version-can-be-used#answer_1520200

在 MATLAB Online 中打开

try
    rectangle('Position',[1 2 5 6],'Rotation',45);
catch ME
    fprintf("This command threw the following error:\n%s", ME.message)
end
This command threw the following error:
Unrecognized property Rotation for class Rectangle.

The word Rotation does not appear at all on the documentation page listing the properties for the object created by the rectangle function.

You could create a rectangle and call rotate on it.

There is an object in Image Processing Toolbox, images.roi.Rectangle, that has rotation-related properties. Did you meant to create one of those?

obj = images.roi.Rectangle('Position',[1 2 5 6],'Rotation',45)
obj = 
  Rectangle with properties:

         Position: [1 2 5 6]
    RotationAngle: 45
      AspectRatio: 1.2000
            Label: ''

  Use GET to show all properties

Or you could create a polyshape object and call its rotate method.

There are a number of other functions that show up when I search the documentation for "rectangle rotation" -- if you meant to use one of those please clarify which type of object you're trying to use and we may be able to suggest the right approach (or tell you that what you're trying to do isn't supported.)

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DGM 2024-9-21

编辑：DGM 2024-9-21

在 MATLAB Online 中打开

The rotate() function does not work on rectangle objects.

hr = rectangle('Position',[1 2 5 6]);

rotate(hr,[0 0 1],45) % does nothing

axis equal

You can use hgtransform on rectangle objects:

% initial rectangle parameters

rsize = [5 7]; % [w h]

center = [3.5 5]; % [x y]

% cycle parameters

offset = [8 0]; % [x y]

anglerange = [0 90];

nsteps = 7;

% draw a sequence of rectangles

angles = linspace(anglerange(1),anglerange(2),nsteps);

g = gobjects(nsteps,1);

hr = gobjects(nsteps,1);

for k = 1:nsteps

g(k) = hgtransform;

hr(k) = rectangle('Position',[-rsize/2 rsize],'parent',g(k),'facecolor','r');

Mrot = makehgtform('zrotate',deg2rad(angles(k)));

Mtrans = makehgtform('translate',[(center + (k-1)*offset) 0]);

g(k).Matrix = Mtrans*Mrot;

hold on

end

axis equal

... or you can use rotate() on patch() objects (or polyshapes)

% initial rectangle parameters

rsize = [5 7]; % [w h]

center = [3.5 5]; % [x y]

% cycle parameters

offset = [8 0]; % [x y]

anglerange = [0 90];

nsteps = 7;

% draw a sequence of rectangles

angles = linspace(anglerange(1),anglerange(2),nsteps);

hr = gobjects(nsteps,1);

for k = 1:nsteps

thisc = center + (k-1)*offset;

vx = thisc(1) + [-1 1 1 -1]*rsize(1)/2;

vy = thisc(2) + [-1 -1 1 1]*rsize(2)/2;

hr(k) = patch(vx,vy,'r');

rotate(hr(k),[0 0 1],angles(k),[thisc 0]);

hold on

end

axis equal

The rotation in the rectangle function in matlab cannot be used, but the 2022 version can be used.

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